A free web browser developed by Google from the open source Chromium project with a focus on speed and minimalism. Chrome offers fast start-up and web page loading, supports a minimalist user interface, automatically updates in the background, and offers syncing of browser bookmarks, extensions, passwords, and history between multiple computers by your Google account.

Additionally, Chrome has Flash and PDF support built into the browser for better speed and security.

HandBrake is an open-source, multithreaded video transcoder- it converts digital media from one format to another, compressing the files in the process. Handbrake can rip encrypted DVDs with libdvdcss (libdvdcss is installed with VLC media player on Mac OS X, or AnyDVD/DVD 43 on Windows).

Handbrake supports:
-Any Blu-ray or DVD-like source: VIDEO_TS folder, DVD image or real DVD, and some .VOB, .m2ts, and .TS files. Without VLC, Handbrake requires media to be unencrypted or already decrypted by third-party programs (i.e. DVD rippers).
-Almost any other multimedia file it can get libavformat to read and libavcodec to decode.

HexChat is an IRC client based on XChat for Linux , but unlike XChat it’s completely free for both Windows and Unix-like systems.
HexChat was originally called XChat-WDK which in turn was a successor of freakschat.

Features

Easy to use and customizable interface
Cross-platform on Windows, OS X, and Unix-like OSes
Highly scriptable with Python and Perl
Translated in multiple languages
Fully open source and actively developed
Multi-network with auto-connect, join, and identify
Spellcheck, Proxies, SASL, DCC support and more

LibreOffice is a free and open-source office suite that is compatible with other major office suites, and is available on all operating systems. It is an independently-developed version of the OpenOffice.org suite.

The office suite includes:

LibreOffice - Writer, a word processor with similar functionality and file support to Microsoft Office Word . It has extensive WYSIWYG word processing capabilities, but can also be used as a basic text editor.

LibreOffice - Calc , a spreadsheet program, similar to Microsoft Office Excel . It has a number of unique features, including a system which automatically defines series of graphs, based on information available to the user.

GNU Midnight Commander is a visual file manager, licensed under GNU General Public License and therefore qualifies as Free Software. Its a feature rich full-screen text mode application that allows you to copy, move and delete files and whole directory trees, search for files and run commands in the subshell. Internal viewer and editor are included.

Midnight Commander is based on versatile text interfaces, such as Ncurses or S-Lang, which allows it to work on a regular console, inside an X Window terminal, over SSH connections and all kinds of remote shells.

MKVToolnix is a set of tools to create, alter and inspect Matroska files under Linux, other Unices and Windows. They do for Matroska what the OGMtools do for the OGM format and then some. The latest builds now have the ability to create WebM compliant Files.

Picard is the next generation MusicBrainz tagging application. This new tagging concept is album oriented, as opposed to track/file oriented like the ClassicTagger was. Picard is written in Python, which is a cross-platform language, and makes use of cross-platform libraries - this allows the same code to run both on Windows, Linux and Mac OS X.

OBS Studio (also known as Open Broadcaster Software, or OBS) is a screen-casting and live-streaming software available across multiple platforms including Mac OSX, Windows and Linux. Boasting features typically only found in commercial screen recording apps, OBS also provides one of the simplest workflows with an intuitive and easy-to-learn interface that makes recording and streaming a breeze. It's also totally free and open-source.

With its long standing history of continued updates and considering its ease of use and free cost, it's no wonder OBS is one of the most popular and highest recommended apps for screen-casting and live streaming.

NOTABLE FEATURES:

Cross-platform (available for Mac, Windows and Linux).
Encoding using H264 (x264) and AAC.
Support for Intel Quick Sync Video (QSV) and NVENC.
Unlimited number of scenes and sources.
Live RTMP streaming to Twitch, YouTube, DailyMotion, Hitbox and more.
File output to MP4 or FLV.
GPU-based game capture for high performance game streaming.
DirectShow capture device support (webcams, capture cards, etc).
Windows 8 high speed monitor capture support.
Bilinear or lanczos3 resampling.
Light and dark themes to support various working conditions and preferences.

Okteta is a simple editor for the raw data of files. This type of program is also called hex editor or binary editor. The data is displayed in the traditional view with two columns: one with the numeric values and one with the assigned characters. Editing can be done both in the value column and the character column. Besides the usual editing capabilities Okteta also brings a small set of tools, like a table listing decodings into common simple data types, a table listing all possible bytes with its character and value equivalents, a info view with a statistic and a filter tool.

The qBittorrent project aims to provide a Free Software alternative to µTorrent . Additionally, qBittorrent runs and provides the same features on all major platforms (Linux, Mac OS X, Windows, OS/2, FreeBSD).

qBittorrent is based on the Qt toolkit and libtorrent-rasterbar library.

Qt Creator is a cross-platform C++, JavaScript and QML integrated development environment which is part of the SDK for the Qt Framework.

It includes a visual debugger and an integrated GUI layout and forms designer. The editor's features include syntax highlighting and autocompletion, but purposely not tabs (although plug-ins are available). Qt Creator uses the C++ compiler from the GNU Compiler Collection on Linux and FreeBSD. On Windows it can use MinGW or MSVC with the default install and can also use Microsoft Console Debugger when compiled from source code. Clang is also supported.

Qt Creator also includes a project manager that can use a variety of project formats such as .pro, CMake, Autotools and others. A project file can contain information such as what files are included into the project, custom build steps and settings for running the applications.

Moreover Qt Creator includes a code editor and integrates Qt Designer for designing and building graphical user interfaces (GUIs) from Qt widgets.

SimpleScreenRecorder is a Linux screen recorder that supports X11 and OpenGL. It is easy to use, feature-rich, and has a Qt-based graphical user interface. It can record the entire screen or part of it, or record OpenGL applications directly. The recording can be paused and resumed at any time. Many different file formats and codecs are supported, and easy to add more.

Skype is the most popular free voice-over IP and instant messaging service globally. It allows users to text, video and voice call over the internet. Users can also call landlines and mobiles at competitive rates using Skype credit, premium accounts and subscriptions.

Features:
· Find all of your friends and family in an instant - search for friends, groups, conversations or new contacts on Skype. With over 300 million people using Skype, you’re bound to bump into someone you know.
· Call your world for free - Free voice and video calls let you talk to your heart’s content with all your friends and family on Skype.
· Make low cost calls to mobiles and landlines - Keep in touch with anyone even if they’re not on Skype, with low cost calls to mobiles and landlines.
· Instantly get in touch - No matter where you are, your friends are always available with free instant messaging.
· Share moments - Send photos, record and send video messages, share your location or share web content with the people who matter most.
· Available for Apple Watch - see your notifications and chat on your Apple Watch so you’re always part of the conversation.
· Skype is available everywhere - on smartphones, tablets, Macs, PCs, and even TVs. Whatever your friends or family use, Skype is there. Simple.

The Skype that you use at home is great for smaller businesses of up to 20 employees. It is free to use, unless you want to buy credit to make calls to landlines and mobiles.

Skype for Business lets you add up to 250 people to online meetings, gives you enterprise-grade security, allows you to manage employee accounts, and is integrated into your Office apps. It costs from $2 per month per user.

Spotify is a commercial music streaming service providing digital rights management-restricted content from record labels including Sony, EMI, Warner Music Group and Universal.

Music can be browsed by artist, album, genre, playlist, or record label, as well as by direct searches. On computers, a link allows the listener to purchase selected material via partner retailers.

Spotify music streaming is available on all Android and iOS devices and on desktop computers for unlimited durations. Features like offline listening and ad-free playback are only available for Premium subscribers of the service.

Stellarium is a free open source planetarium for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope.
It is being used in planetarium projectors. Just set your coordinates and go.

The Amnesic Incognito Live System (Tails) is a Debian based live CD/USB with the goal of providing complete Internet anonymity for the user. The product ships with several Internet applications, including web browser, IRC client, mail client and instant messenger, all pre-configured with security in mind and with all traffic anonymised. To achieve this, Incognito uses the Tor network to make Internet traffic very hard to trace.

Terminator, multiple terminals in one window. The goal of this project is to produce a useful tool for arranging terminals. It is inspired by programs such as gnome-multi-term, quadkonsole, etc. in that the main focus is arranging terminals in grids (tabs is the most common default method, which Terminator also supports).

Thunderbird is a free, open source, cross-platform e-mail, news and instant messaging client. The project strategy is modeled after Mozilla Firefox.

It supports POP (storing mail locally on your hard drive so that it can be accessed without an internet connection), and IMAP. It features excellent mail filter capabilities and management.

Thunderbird has strong support for using multiple accounts and identities, including automated signature features.

Chat functionality is built in, so you can enjoy real-time conversation with your contacts, right from your favorite messaging application, with multiple supported networks. Thunderbird makes it easy to search through both past conversations and received emails.

Thunderbird can also function as an RSS/Atom feed reader, and has a large selection of add-ons that extend it with calendar support, PGP support, integration with online services and much more.

TimeShift for Linux is an application that provides functionality similar to the System Restore feature in Windows and the Time Machine tool in Mac OS. TimeShift protects your system by taking incremental snapshots of the file system at regular intervals. These snapshots can be restored at a later date to undo all changes to the system.

Snapshots are taken using rsync and hard-links. Common files are shared between snapshots which saves disk space. Each snapshot is a full system backup that can be browsed with a file manager.

TimeShift is similar to applications like rsnapshot, BackInTime and TimeVault but with different goals. It is designed to protect only system files and settings. User files such as documents, pictures and music are excluded. This ensures that your files remains unchanged when you restore your system to an earlier date. If you need a tool to backup your documents and files please take a look at the excellent BackInTime application which is more configurable and provides options for saving user files.

ucaresystem app it is an automation script that automatically and without asking for your intervention performs some crucial Ubuntu maintenance processes, which otherwise would be done one by one and pressing Y / N each time.

With Viber, everyone in the world can connect. Freely. More than 460 million Viber users text, make HD-quality phone and video calls, and send photo and video messages worldwide over WiFi or 3G - for free. Viber Out can be used to make calls to non-Viber landlines and mobile numbers at low rates. Viber is available for many smartphones and platforms.

On Viber, your phone number is your ID. The app syncs with your mobile contact list, automatically detecting which of your contacts have Viber.

• Text with your friends
• Make free phone and video calls with HD sound quality
• Share photos, videos, voice messages, locations, stickers and emoticons
• Create gGroups messages with up to 100 participants
• Follow Public Chats – get on the inside with your favourite celebs, brands and personalities; watch their conversations unfold in real-time, ‘like’ comments and share multi-media content
• Download stickers from the Sticker Market to make messaging fun!
• Push notifications guarantee that you never miss a call or message, even when Viber is off
• Support for the Viber Desktop application on Windows, Mac, Linux and Windows 10

Vim ("Vi IMproved") is an advanced text editor that allows syntax highlighting, word completion and has a huge amount of contributed content.

Vim offers several “modes” for editing with efficiency. This makes vim a non-user-friendly application but it is also a strength. The normal mode binds alphanumeric keys to task-oriented commands. The visual mode highlights text. The command-line mode offers more tools (for search&replace, defining functions, etc.)

Y PPA Manager is a GUI tool to add, remove, purge, list and search for Launchpad PPAs. It works with Ubuntu and Linux Mint.

Y PPA Manager features:

Add PPA

Remove PPA

Purge PPA

Search for packages in Launchpad PPAs: a regular search which is faster, but doesn't display exact package matches and comes with less details and a deep search which displays exact package matches. In the search, you can also see if a PPA is already added on your system or not and if a package is already installed (and the installed version). You can perform the following actions on a PPA listed in the search results: add it, list packages in the PPA, open PPA in browser, download packages, install a package using the built-in installer (if the PPA is not already added, it will be added)

Update single PPAs - without running a full "apt-get update", which should be a lot faster (and especially useful for computers with slow Internet connections)

List packages in PPAs enabled on your computer

Edit PPA source file

Remove duplicate PPAs

Import all missing GPG keys

Fix GPG BADSIG errors

Backup an restore PPAs (automatically imports missing GPG keys)

Re-enable working PPAs after Ubuntu upgrade: when you upgrade to a newer Ubuntu release, the PPAs are disabled so using this feature, the PPAs that work with the new Ubuntu version you're using are re-enabled, leaving the others disabled

Update release name in working PPAs: somewhat similar to the feature above, this one is useful if you've backup up the PPAs in say Ubuntu Precise and restored them in Ubuntu Quantal (just an example) - in this case, using this feature you can replace "precise" in each PPA source with "quantal", but only for the PPAs that have packages for Quantal.

At GitHub, we're building the text editor we've always wanted. A tool you can customize to do anything, but also use productively on the first day without ever touching a config file. Atom is modern, approachable, and hackable to the core. We can't wait to see what you build with it.

Blender is the free open source 3D content creation suite, available for all major operating systems under the GNU General Public License.
It can be used for modeling, UV unwrapping, texturing, rigging, water simulations, skinning, animating, rendering, particle and other simulations, non-linear editing, compositing, and creating interactive 3D applications, rigid body, fluid, cloth and softbody dynamics, modifier based modeling tools, powerful character animation tools, a node based material and compositing system and Python for embedded scripting.

Audacity is free, open source software for recording and editing sounds. You can use Audacity to record live audio, convert tapes and records, edit sound files, change the speed or pitch of a recording and much more.

Calibre is a free and open source e-book library management application made by users, for users. Many languages, designed around the concept of the logical book, i.e., a single entry in your library that may correspond to actual e-book files in several formats.

Calibre can sort the books in your library by title, author, date added, date published, size, rating, or series, along with extra metadata such as tags and personal comments. You can easily search your book collection for a particular book, based on any of this information. Calibre can also go onto the internet to find online books based on existing title/author or ISBN information.

In addition, Calibre also:
-syncs to your ebook reader
-downloads news from the internet and converts it into ebook form
-offers a ebook viewer that can display all major ebook formats

Features:

Library Management
E-book conversion
Syncing to e-book reader devices
Downloading news from the web and converting it into e-book form
Built-in e-book viewer
Content server for online access to your book collection
E-book editor for the major e-book formats

Brackets is an open-source editor for web design and development built on top of web technologies such as HTML, CSS and JavaScript. The project was created and is maintained by Adobe, and is released under an MIT License.

Code::Blocks is a free C++ IDE built to meet the most demanding needs of its users. It is designed to be very extensible and fully configurable.

An IDE with all the features a developer need, having a consistent look, feel and operation across platforms.

Built around a plugin framework, Code::Blocks can be extended with plugins. Any kind of functionality can be added by installing/coding a plugin. For instance, compiling and debugging functionality is already provided by plugins!

A hierarchical note taking application, featuring rich text and syntax highlighting, storing data in a single xml or sqlite file.

The following languages are supported:

Armenian (Seda Stamboltsyan, up to date)
Chinese Simplified (Channing Wong, TO BE UPDATED)
Czech (Pavel Fric, up to date)
Dutch (Luuk Geurts, up to date)
English (default)
French (Klaus Becker, up to date)
German (Frank Brungräber, up to date)
Greek (Delphina, up to date)
Italian (Vincenzo Reale, up to date)
Japanese (Piyo, up to date)
Lithuanian (Zygis, TO BE UPDATED)
Polish (Marcin Swierczynski, up to date)
Portuguese Brazil (TO BE UPDATED)
Russian (Andriy Kovtun, up to date)
Slovenian (Erik Lovric, up to date)
Spanish (Daniel MC, up to date)
Turkish (Ferhat Aydin, TO BE UPDATED)
Ukrainian (Andriy Kovtun, up to date)

A powerful, yet simple to use screenshot software. Features a free draw tool, arrows, lines, circles, and other tools for editing screenshots you take. Screenshots can be uploaded to Imgur, saved to a local file, or copied directly to your clipboard to easily paste in other programs. Many configuration options are available, such as hiding icons or changing the colors used in the program. Flameshot is also open source, so experienced developers can help improve the program.

GIMP is a freely distributed program for such tasks as photo retouching, image composition and image authoring. It can be used as a simple paint program, an expert quality photo retouching program, an online batch processing system, a mass production image renderer, an image format converter, and more.